NSTR Series

item NSTR Series

Various transformers
NSTR Series0
NSTRシリーズ0
Specifications Lightning Protection Transformer
Designed to protect equipment and human safety from abnormal voltages caused by lightning strikes or power line accidents.
Characteristics Impulse Voltage Withstand Capacity: 30KV (1.2 × 50μs)
Surge Transfer Ratio: 1/1000 (-60dB) or Less
Other Single-Phase Enclosed Type
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Specifications
Lightning Resistant Series
Type NSTP NSTR NTTP NTTR
Appearance of installation Built-in type without case Stationary case available Built-in type without case Stationary case available
Number of phases Single Phase Single Phase 3-phase 3-phase
Linear 2-wire 2-wire 3 lines 3 lines
Frequency 50/60Hz 50/60Hz 50/60Hz 50/60Hz
Rated Input Voltage 100~400V (as specified) 100~400V (as specified) 100~400V (as specified) 100~400V (as specified)
Rated Output Voltage 100~400V (as specified) 100~400V (as specified) 100~400V (as specified) 100~400V (as specified)
Output Capacity 500~10KVA 500~10KVA 5~50KVA 5~50KVA
(By designation) (By designation) (By designation) (By designation)
Heat resistance class H H H H
Surge transition rate (balance) -60dB or less -60dB or less -60dB or less -60dB or less
（3KV 1.2×50μS） （3KV 1.2×50μS） （3KV 1.2×50μS） （3KV 1.2×50μS）
Impulse withstand voltage Primary side to secondary side/ground: 30KV (excluding arrester, 1.2 x 50μS) Primary side to secondary side/ground: 30KV (excluding arrester, 1.2 x 50μS) Primary side to secondary side/ground: 30KV (excluding arrester, 1.2 x 50μS) Primary side to secondary side/ground: 30KV (excluding arrester, 1.2 x 50μS)
Efficiency More than 90% below 5KVA More than 90% below 5KVA More than 90% below 5KVA More than 90% below 5KVA
5KVA or more, 95% or more 5KVA or more, 95% or more 5KVA or more, 95% or more 5KVA or more, 95% or more
Insulation resistance 100MΩ or more at DC1000V megger 100MΩ or more at DC1000V megger 100MΩ or more at DC1000V megger 100MΩ or more at DC1000V megger
Dielectric strength Primary side to secondary side/ground AC1000V (excluding arrester, 1 minute) Primary side to secondary side/ground AC1000V (excluding arrester, 1 minute) Primary side to secondary side/ground AC1000V (excluding arrester, 1 minute) Primary side to secondary side/ground AC1000V (excluding arrester, 1 minute)
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Product Specifications
NSTR Series Specifications
NSTR type, single phase, stationary type, case included
Model Output capacity KVA Body dimensions Mass Kｇ   Body dimensions Mass (kg)
(W×D×H)ｍｍ
NSTR-500 500 460×400×480 35 420×500×349 65
NSTR-1K 1K 300×360×570 45 420×500×349 75
NSTR-2K 2K 300×360×570 55    
NSTR-3K 3K 300×360×570 70    
NSTR-5K 5K 380×480×520 80    
NSTR-7.5K 7.5K 320×320×400 110    
NSTR-10K 10K 320×320×400 120    
Specification
Overview Model Number of phases Capacity
Lightning protection transformer NSTP・NSTR Single Phase 500~10KVA
Lightning protection transformer NTTP・NTTR 3-phase 5~50KVA
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